US6879314B1 - Methods and apparatus for subjecting an element to an electrical field - Google Patents
Methods and apparatus for subjecting an element to an electrical field Download PDFInfo
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- US6879314B1 US6879314B1 US09/667,807 US66780700A US6879314B1 US 6879314 B1 US6879314 B1 US 6879314B1 US 66780700 A US66780700 A US 66780700A US 6879314 B1 US6879314 B1 US 6879314B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/06—Ink jet characterised by the jet generation process generating single droplets or particles on demand by electric or magnetic field
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
- G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
- G02F1/16755—Substrates
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
- G02F1/1677—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/06—Ink jet characterised by the jet generation process generating single droplets or particles on demand by electric or magnetic field
- B41J2002/061—Ejection by electric field of ink or of toner particles contained in ink
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
- G09G3/344—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
Definitions
- the invention relates to apparatus and methods for subjecting an element, such as a colorant particle, to an electric field, so as to provide images, such as video or still images.
- the conventional art includes various technologies for displaying still and/or video images. These technologies include silicon micro-opto-electro-mechanical systems (MOEMs), such as a micro-mirror XGA display for use in portable business projectors, liquid crystal displays, such as displays that include liquid crystal on glass, plastic and silicon, plasma displays and cathode ray tubes (CRTs).
- MOEMs silicon micro-opto-electro-mechanical systems
- LCDs liquid crystal displays
- displays such as displays that include liquid crystal on glass, plastic and silicon
- the conventional displays are subject to several problems. For example, the conventional displays that attain high definition are expensive and have slow refresh rates. The technology of some of the conventional displays cannot be applied to provide either very small or very large displays. Some of the conventional displays require complex control systems. Other conventional displays require a relatively large amount of power to operate.
- the invention can thereby achieve either a monochromatic or full color video, or still image display, having very high resolution and unlimited grayscale and color levels.
- a colorant particle having an electric charge, and ranging in size from a single atom to a molecular collection several millimeters in size, can be moved inside a channel of a body in a direction that is substantially parallel to a direction of incoming illumination rays.
- the particle can be moved inside the channel, between a position at a bottom of the channel and a position at a top of the channel, by the force of an electric field generated by a charge at the bottom of the channel.
- the colorant particle When the colorant particle is disposed at a position at the top of the channel, a substantial portion of light entering the top of the channel reflects off the colorant particle and exits the top of the channel, such that light of the same color as the colorant particle is reflected. A user disposed at a position adjacent the top of the channel thereby views light that is the same as the colorant particle.
- the colorant particle when the colorant particle is disposed at a position at the bottom of the channel, a substantial portion of light entering the top of the channel does not reflect off the colorant particle. The user therefore does not view light that is the same color as the colorant particle.
- Differing amounts of the light are reflected to the user when the colorant particle is disposed at different positions between the top and bottom of the channel. For example, a relatively large amount of the light is reflected when the colorant particle is disposed near the top of the channel. Alternatively, a relatively small amount of the light is reflected when the colorant particle is disposed near the bottom of the channel.
- moving the colorant particles between positions at the top and bottom of the channel enables differing intensities of individual colors, corresponding to the colors of the colorant particles, to be reflected.
- the invention can be applied to an analog dot display, wherein each colorant particle is positioned in analog fashion at any position along the direction of extension of the channel.
- the invention can also be applied to a digital dot display, wherein each colorant particle only has two stationary positions, i.e., at the top and bottom ends of the channel.
- the invention is also intended to cover methods of manufacturing any of the displays discussed above.
- Such methods can include the steps of defining channels in a carrier body, metalizing E-field electrodes and circuitry on a bottom surface of the carrier body, affixing a bottom cover at a bottom end of each of the channels, filling each of the channels with at least one colorant particle of the appropriate color, and affixing a transparent top cover to a top end of each of the channels.
- the step of filling each of the channels with at least one colorant particle of the appropriate color can be accomplished by filter plates.
- the invention is also not limited to only covering video and still picture displays. Instead, the invention is also intended to cover print media.
- Print media can be provided in accordance with the invention by locking the colorant particles at appropriate locations within the channels, either temporarily or permanently.
- FIG. 1 is a schematic diagram that shows a display in accordance with an embodiment of the invention
- FIG. 2 is a schematic diagram that shows an exemplary embodiment of a structure for moving the colorant particles within the channels;
- FIG. 3 is a top view of the display of FIG. 1 that shows electrode rings
- FIG. 4 is a schematic diagram that shows a display in accordance with an alternative embodiment of the invention.
- FIG. 5 is a schematic diagram that shows respective forces applied to a colorant particle in accordance with an embodiment of the invention
- FIG. 6 is a perspective view of a disk which is provided to explain characteristics of an electric field force
- FIG. 7 is a schematic diagram of an exemplary method of manufacturing a display in accordance with the invention.
- FIG. 8 is a schematic diagram of an exemplary method of providing colorant particles into the channels.
- FIG. 9 is a schematic diagram of an electrode drive circuit architecture using a classic CMOS output for use as a control circuit for the display in accordance with the invention.
- FIG. 1 is a schematic diagram that shows a display in accordance with an embodiment of the invention.
- the display 1 includes a carrier body 2 that defines multiple channels 4 .
- the carrier body 2 can be made of a variety of materials, such as, for example, silicon, plastic, organic biomaterials and ceramic.
- a bottom cover 6 extends across a bottom end of each of the channels 4 .
- a top cover 8 extends across a top end of each of the channels 4 .
- the bottom and top covers 6 , 8 can close off the channels 4 so as to define a sealed area therein.
- Each of the top and bottom covers 6 , 8 can be defined by a single sheet, or alternatively can include multiple separate elements, each element covering a single channel 4 .
- a lens 9 can be provided on top of each of the top covers 8 in order to enhance optical characteristics.
- the lens 9 can be made of a variety of materials, such as transparent plastic.
- the lens 9 can be defined by a single sheet, or alternatively can include multiple separate elements, each element being disposed adjacent a single channel 4 . Any type of lens that improves optical characteristics of the display can be used.
- FIG. 1 shows the lens 9 being separate from the top cover 8 .
- the invention is not limited to this structure.
- a single element can be provided to achieve the operation of the lens 9 and the cover 8 .
- the display can be provided without including the lens 9 at all.
- Colorant particles are disposed within at least some of the channels 4 . Different colors of colorant particles can be used to provide a color display. For example, cyan particles 10 , 16 , yellow particles 12 , 18 and magenta particles 14 , 20 can be disposed in the channels 4 to provide a color display. However, any other combination of colored particles, for example particles having other fundamental colors, such as red, green and blue, can be used.
- Each pixel of the display can include a group of channels 7 that houses one particle of each of the fundamental colors.
- each pixel which can be any size, such as 45-60 microns, can be defined by one cyan particle 10 , one yellow particle 12 and one magenta particle 14 .
- the display 1 can thereby provide any color. Further, the pixels can be used to achieve the requisite grayscale effects to realize photographic quality images.
- the colorant particles can be either solid or liquid.
- Various techniques, such as micro-encapsulation, can be used to enable the use of liquid colorant particles.
- micro-encapsulation can be used with solid particles, as well as liquid particles, to prevent, or at least minimize, abrasive wear of the colorant particles against interior surfaces, such as inner sidewalls, of the channels 4 .
- each colorant particle can be a single atom or alternatively be several millimeters in size. Since the colorant particles can be extremely small, and the display can define an array of channels that each have an extremely small width, very high resolution of images can be achieved. For example, the resolution of the display 1 can be thousands of lines per inch.
- the colorant particles are similarly not limited by shape.
- the colorant particles shown in FIG. 1 are spherical. However, colorant particles of any other shape can be provided.
- the colorant particles can be rectangular, cylindrical, oblong, triangular, etc.
- the channels 4 are also not limited to any particle size or shape.
- very small channels 4 can be provided to correspond with very small particles.
- very large channels 4 can be provided to correspond with very large particles.
- the channels 4 can be provided in any shape.
- a cross-section of the channels 4 can define any shape, such as a circle, square, rectangle, triangle, etc.
- the overall size of the display 1 is similarly not limited by size or shape.
- channels 4 that are large in size and/or large in number can be provided with a corresponding number and/or size of particles to achieve a very large display 1 .
- channels 4 that are small in size and/or are small in number can be provided with a corresponding number and/or size of particles to achieve a very small display 1 .
- channels 4 and colorant particles of any size can be arranged so as to define a display of any shape.
- the colorant particles can move in a direction 22 , which is substantially parallel to a direction of extension of the channels 4 .
- a colorant particle is disposed near the top end of the channels 4 , such as where cyan particle 10 is disposed in FIG. 1
- entering light 24 entering the channel 4 through the top cover 8 and lens 9 is reflected off of the cyan particle 10 and exits as viewable exiting light 26 out of the display 1 via the cover 8 and lens 9 .
- the viewable exiting light 26 that reflects off of the cyan particle 10 is cyan colored light.
- a user disposed adjacent the top end of the channels 4 would view the viewable cyan exiting light 26 .
- Differing amounts of light are reflected off of the colorant particles to exit the display as exiting light depending on the location of the colorant particles within the channels 4 .
- This effect is obtained since light entering the top end of the channels 4 via the lens 9 and top cover 8 , at a relatively wide range of angles, intersects colorant particles that are disposed near the top end of the channels 4 .
- light entering the channels at angles of approximately 45° on either side of the direction of movement of the colorant particles, indicated as arrow 22 intersects a colorant particle disposed near the top of the channels 4 , such as cyan particle 10 .
- a colorant particle disposed near the bottom of the channels 4 such as magenta particle 20 .
- the remainder of the light entering the channel 4 intersects and is absorbed by sidewalls of the channel 4 .
- not enough light may be reflected off of the particles disposed near the bottom end of the channel 4 to be visible to the user.
- a user Since a relatively large amount of light is reflected off of a colorant particle disposed near the top end of its respective channel, a user views relatively intensely colored light corresponding to the color of that particle. However, the intensity of the colored light viewed by the user decreases as the particle moves toward the bottom end of the channels 4 . For example, a user would view yellow light reflecting off of yellow particle 12 as being less intense than the cyan light reflecting off of cyan particle 10 . The intensity of viewable colored light decreases until the particle is disposed near the bottom end of the channels wherein very little or no colored light is visible to the user.
- FIG. 2 is a schematic diagram that shows an exemplary embodiment of a structure for moving the colorant particles within the channels 4 .
- the carrier body 2 is made of silicon.
- a lower MOS gate terminal 28 is provided at a lower surface of the carrier body 2 beneath each channel 4 .
- the lower MOS gate terminal includes an oxide layer 30 disposed on the lower surface of the carrier body 2 and a metal layer 32 disposed on the oxide layer 30 .
- the MOS gate terminal 28 is connected to an upper Si Bulk connection 34 via a signal line 36 to provide gate bias voltage 38 .
- FIG. 2 shows Silicon Bulk p-type bulk doping.
- the silicon region of the carrier body 2 directly over the oxide layer 30 will either be charged positive or negative.
- the charge of the carrier body 2 directly over the oxide layer 30 and directly under the channel 4 creates an electric field in the channel 4 in the direction of extension 22 of the channel 4 .
- the colorant particle 10 is provided with an electric charge, the colorant particle will react with the electric field in the channel, such that changing the gate voltage can be used to control the position of the colorant particle 10 within the channel.
- the invention is intended to cover any apparatus and method of moving the colorant particle.
- the exemplary embodiment of FIG. 1 provides electrode rings 40 at both of the top and bottom ends of each channel.
- the electrode rings 40 can produce a sufficient charge to achieve an electric field to react with a charged colorant particle to move the colorant particle along direction 22 .
- FIG. 3 is a top view of the display of FIG. 1 that shows electrode rings. Specifically, electrode rings 42 are provided around each of the channels 4 . Each of the electrode rings 42 is connected to an electrical trace 44 for connection to a supply of control voltage.
- FIG. 4 is a schematic diagram that shows a display in accordance with an alternative embodiment of the invention.
- the group of channels 46 that defines each pixel includes one cyan particle 10 , one yellow particle 12 , one magenta particle 14 and one black particle 15 .
- the display of FIG. 4 is also different from the display of FIG. 1 , in that the display of FIG. 4 only includes a single electrode ring 48 for each channel 4 . Specifically, an electrode ring 48 is only provided at a bottom end of each channel 4 to achieve an electric field to react with a charged colorant particle.
- Apparatus and methods discussed above can be applied to an analog dot display form, wherein the colorant particles can be moved in analog fashion to any position within the channels 4 .
- a fluid 50 can be provided in the channels to dampen the analog movement of the colorant particles.
- the fluid 50 can be either a liquid or a gas. Dampening the analog movement of the colorant particles helps to achieve precise positioning of the colorant particles by enabling a controller to precisely determine the location of each colorant particle along the direction of elongation of its respective channel 4 .
- FIG. 5 is a schematic diagram that shows respective forces applied to a colorant particle in accordance with an embodiment of the invention. The forces are discussed below in accordance with a display that faces upwardly, i.e., wherein the direction of elongation of the channels is substantially parallel to a gravity vector.
- the fluid 50 disposed within the channels 4 can provide a setting time constant to ensure that the position of the colorant particle within the tube is known.
- the constant is based on the buoyancy effect of each particle, which is arrived at by determining the amount of fluid that the particle displaces.
- Each colorant particle has a certain mass, and thus gravity pulls the particle toward the bottom end of the channel 4 .
- the constant is therefore also based on the effect of gravity on the colorant particle.
- FIG. 5 shows that the force of the electric field acts on the particle in an opposite direction from the force of gravity.
- the buoyancy force of the particle acts on the particle in the same direction as the force due to the electric field.
- the force of the electric field equals the force of gravity minus the buoyancy force of the particle, then the particle will remain stationary within the channel 4 .
- the position of the particle within the channel 4 can be precisely estimated by disposing the particle at the bottom of the channel 4 and applying an amount of electric field force that equals the force of gravity minus the buoyancy force of the particle. Thus, the maximum amount of electric field force is applied that does not move the colorant particle upwardly in the channel 4 .
- the amount of electric field force can then be increased to be greater than the force of gravity minus the buoyancy force of the particle.
- the particle will then travel upwardly within the channel 4 at a known velocity, i.e., distance per unit of time.
- a determining device can count the time increments and re-adjust the electric field force to balance the above equation in order to stop the movement of the colorant particle and hold it at a stationary position.
- the above equations can be used to allow all of the colorant particles to be positioned for each successive video frame.
- the selection of the fluid 50 and the control of the electric field force acting on the changed colorant particle will determine the video frame rate, i.e., the refresh rate.
- force is applied to a display oriented such that the display is facing upwards.
- the display can also be provided for use in any orientation. Modifying the description of forces to correspond to other orientations of the display can be provided via trigonometry.
- the buoyancy force can be made to far exceed the force of gravity, thereby lessening the dependency of particle motion upon the gravity vector.
- a display that uses a higher fluid density can be used for an indoor/outdoor sign, television display or computer display, such as where the direction of extension of the channels 4 is perpendicular to the gravity vector. Since this display has increased fluid density, a greater electric field force must be used, and thus the video refresh rates may be somewhat slower than for a display that uses a less dense fluid 50 . Flicker free video can be achieved if the fluid 50 is of a density so as to provide a time constant for control greater than 60 Hz.
- each colorant particle inside the channels 4 is dependent on an analog voltage bias level, the reflected light from each colorant particle is adjustable in an analog fashion. Therefore, the number of grayscale and color levels is unlimited.
- the exemplary embodiments discussed above are inherently dynamic in operation.
- the displays discussed above can be used as video displays.
- the displays discussed above can also be used as still image displays.
- each colorant particle is positioned in analog fashion at any location along the direction of extension of the channel 4 .
- the invention is intended to cover a variety of other control methods.
- the invention can also be applied to a digital dot display, wherein each colorant particle only has two stationary positions.
- a digital dot display can be used to either dispose each particle at the top end of its respective channel 4 , which provides maximum color reflection, or at the bottom end of its respective channel 4 , which provides minimum color reflection.
- Fluid 50 does not need to be provided in the channels 4 of the digital dot display, since it is preferable for each colorant particle to travel between the bottom and top ends of the channels as fast as possible.
- the digital dot display can operate similarly to an electronic video equivalent of a color ink jet printer, where there is sufficient resolution at each dot and pixel to make the human eye believe the image ahas continuous grayscale and color reproduction.
- FIG. 6 is a perspective view of a disk which is provided to explain characteristics of an electric field force.
- FIG. 6 as well as equations relating to this figure, are disclosed in Tipler, P. A., Physics , Second Edition, Worth Publishers, Inc., New York, N.Y., 1982.
- the electrode bias can be solved using the force equilibrium equation.
- the force of gravity being equal to the force of electric field can be represented as follows:
- F gravity Fe e-field
- the equation for force due to gravity can be represented as follows:
- F gravity m p g.
- the equation for net electric field force in z direction due to charged disk can be represented as follows:
- V 2 ⁇ ⁇ ⁇ ⁇ kQ d ⁇ d A d ⁇ ( 1 - d d 2 + R 2 ) .
- FIG. 7 is a schematic diagram of an exemplary method of manufacturing a display in accordance with the invention.
- the method can begin with step 1 , wherein a carrier body 2 (base) is provided, and the channels 4 (holes) are defined in the carrier body 2 .
- the channels 4 can be defined in the carrier body 2 by any method, such as, for example, drilling or punching.
- E-field electrodes and circuitry are metalized on the bottom surface of the carrier body 2 and at the bottom end of the channels 4 .
- the E-field electrodes and circuitry can be provided by any method.
- the bottom cover 6 is provided at the bottom end of the channels. If a fluid 50 is to be disposed in the channels 4 , then the bottom cover 6 should seal the bottom end of the channels 4 . Alternatively, if no fluid 50 is to be disposed in the channels 4 , then the bottom cover 6 does not need to seal the bottom end of the channels 4 . Instead, the bottom cover 6 may only obstruct the colorant particle to prevent the colorant particle from exiting the channel 4 .
- the bottom cover 6 can be fixed at the bottom end of the channels 4 by any method, such as welding, fusing or laminating.
- a colorant particle is provided in the channels 4 .
- FIG. 7 shows the exemplary embodiment wherein one of a cyan particle 10 , a yellow particle 12 and a magenta particle 14 is provided in each of the channels 4 .
- a single color of particles is provided in each of the channels 4 .
- other exemplary embodiments include colorant particles of different colors.
- the invention also covers providing colorant particles in only some of the channels 4 , and leaving the remaining channels 4 either vacant or provided with something other than colorant particles.
- FIG. 8 is a schematic diagram of an exemplary method of providing colorant particles into the channels 4 .
- filter plates 52 , 54 , 56 are used to provide colorant particles into the appropriate channels 4 .
- filter plate 52 defines holes 58 that align with the channels 4 to which cyan particles are to be provided.
- a dispenser 60 houses multiple cyan particles 10 .
- Multiple cyan particles 10 are supplied from the dispenser 60 to an upper surface of the filter plate 52 .
- the cyan particles 10 are subjected to the force of gravity and thus travel through the holes 58 so as to be only provided to the appropriate channels 4 .
- the yellow and magenta particles 12 , 14 are similarly provided to the appropriate channels 4 via filter plates 54 , 56 .
- the top cover is provided at the top end of the channels 4 .
- FIG. 6 shows an embodiment wherein the top cover 8 and lens 9 define a single element. However, as discussed above, the top cover 8 and lens 9 can define separate elements. Also, as with the bottom cover 6 , the top cover 8 and lens 9 are not limited in the manner of affixing them at the top end of the channels 4 .
- the exemplary embodiments are discussed above in terms of video and/or still picture displays.
- the invention is also intended to cover print media.
- the display can be a print media by locking the colorant particles at appropriate locations within the channels 4 , either temporarily or permanently.
- the invention is intended to cover any method of locking the colorant particles at appropriate positions within the channels.
- the fluid 50 provided within the channels 4 can be selected to have properties to provide a phase change to lock the colorant particles in position during a print fixing step.
- the phase change can be brought about in any manner, such as by a change in temperature.
- the display can be a print media by providing a separable electrical connection strip on one side of the carrier body 2 .
- the electrode array can be electrically biased for each pixel corresponding to a digital image. While the electric field holds the colorant particles in place within the channels 4 , heat, pressure and/or light fixing can be used to lock the colorant particles in place.
- the exemplary embodiments of the methods and apparatus of the invention provide various advantages.
- the invention can be applied to a wide variety of displays, such as, but not limited to, very small (less than 1 inch per side) display with XGA or greater resolution that could be used inside video or still fame digital cameras, eyeglass or wristwatch displays, cell phone displays, or business and entertainment video projectors (which currently use ⁇ 1′′ liquid crystal or MEMS displays), indoor/outdoor still frame and video signage where the system would be produced using a low cost plastic as the substrate, high definition television applications such as ultra-flat wall displays, computer display applications, cell phone displays, and high density light communications switching matrix.
- the display/print media can provide full color capability. Since the amount of reflected light is dependent upon depth of the colorant particle inside the channel, the amount of reflected “color” for each of the primary colors is theoretically infinitely variable. Thus, a full color display/print media can be provided employing RGB, CYMK and/or other primary color systems.
- the display provides fast video refresh rate in a digital dot display.
- the speed of refresh rate is adjustable by virtue of fluid properties of a fluid provided in the channels in an analog dot display.
- the invention can be applied to provide very, very small displays.
- pigment type color particles can be used that are on the order of a few micrometers in size.
- the invention can be applied to provide even smaller displays, such as a “nano-display,” where each color particle could be either a single atom or a molecular compound that includes several atoms on the order of a few nanometers in size.
- the invention could achieve something on the order or 2,000 lines per inch of display resolution.
- the invention could achieve 100s of thousands of lines per inch of display resolution.
- the visible spectrum is between 400-700 nanometers of wavelength. Therefore, if the diameter of the tube is only 600 nm, most of the visible spectrum of incident light will be filtered and no visible light (color) would be reflected. Therefore, the size of the tube openings may exceed 700 nanometers to be of use for visual displays.
- the invention could be applied to provide non-visible wavelengths, such as for an optical communication device.
- the invention can also be applied to provide low cost manufacturing for large area devices, such as wall displays.
- Such displays could use polymer or plastic as the substrate material.
- FIG. 9 is a schematic diagram of an electrode drive circuit architecture using a classic CMOS output for use as a control circuit for the display/print media in accordance with the invention.
- inherently low power drive electronics can be used in accordance with the invention due to the use of an electric rather than magnetic field as the prime mover of the colorant particles, and the fact that the colorant particles are of very low mass.
- the electric field can be generated by simple voltage bias of a ring, plate or disk electrode, wherein E-field strength is proportional to the voltage on the electrode, etc.
Abstract
Description
Integrating across the Gaussian surface enclosing the disk electrode relates the net flux to the electric field, which can be expressed as follows:
Therefore, the net electric field can be represented as follows:
The coulumb constant in free space can be represented as follows:
The force acting on a particle of charge Qp can be represented as follows:
F=QpE.
Fgravity=Fee-field
The equation for force due to gravity can be represented as follows:
Fgravity=mpg.
Thus, the equation for net electric field force in z direction due to charged disk can be represented as follows:
wherein:
-
- ε=permittivity of medium,
- R=radius of disk electrode,
- Ad=area of disk,
- d=particle distance from disk plane along z axis,
- Qd=charge on disk electrode,
- Qp=charge of particle,
- g=gravitational constant, and
- mp=mass of particle.
Claims (64)
Priority Applications (3)
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US09/667,807 US6879314B1 (en) | 1999-09-28 | 2000-09-22 | Methods and apparatus for subjecting an element to an electrical field |
US10/216,445 US7170470B2 (en) | 1999-09-28 | 2002-08-12 | Methods and apparatus for subjecting an element to an electrical field |
US11/010,395 US7427978B2 (en) | 1999-09-28 | 2004-12-14 | Methods and apparatus for subjecting an element to an electrical field |
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US15643299P | 1999-09-28 | 1999-09-28 | |
US09/667,807 US6879314B1 (en) | 1999-09-28 | 2000-09-22 | Methods and apparatus for subjecting an element to an electrical field |
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US10/216,445 Division US7170470B2 (en) | 1999-09-28 | 2002-08-12 | Methods and apparatus for subjecting an element to an electrical field |
US11/010,395 Continuation US7427978B2 (en) | 1999-09-28 | 2004-12-14 | Methods and apparatus for subjecting an element to an electrical field |
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US6879314B1 true US6879314B1 (en) | 2005-04-12 |
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US09/667,807 Expired - Fee Related US6879314B1 (en) | 1999-09-28 | 2000-09-22 | Methods and apparatus for subjecting an element to an electrical field |
US10/216,445 Expired - Fee Related US7170470B2 (en) | 1999-09-28 | 2002-08-12 | Methods and apparatus for subjecting an element to an electrical field |
US11/010,395 Expired - Fee Related US7427978B2 (en) | 1999-09-28 | 2004-12-14 | Methods and apparatus for subjecting an element to an electrical field |
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US11/010,395 Expired - Fee Related US7427978B2 (en) | 1999-09-28 | 2004-12-14 | Methods and apparatus for subjecting an element to an electrical field |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100156768A1 (en) * | 2008-12-22 | 2010-06-24 | Fletcher Ii James Douglas | Display media, method of forming display media, and printer for printing on display media |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100543822C (en) * | 2004-04-21 | 2009-09-23 | 株式会社普利司通 | The driving method of information display device and the information display device that uses it |
WO2005104077A1 (en) * | 2004-04-21 | 2005-11-03 | Bridgestone Corporation | Information display device drive method and information display device using the same |
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KR100631291B1 (en) | 2005-04-08 | 2006-10-04 | 주식회사 동진쎄미켐 | Light reflecting display driven by electric field |
WO2006117157A1 (en) * | 2005-05-04 | 2006-11-09 | Cytec Surface Specialties, S.A. | Radiation curable methacrylate polyesters |
CN109547851A (en) * | 2018-12-06 | 2019-03-29 | 北京微播视界科技有限公司 | Video broadcasting method, device and electronic equipment |
Citations (91)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3612758A (en) | 1969-10-03 | 1971-10-12 | Xerox Corp | Color display device |
US3668106A (en) * | 1970-04-09 | 1972-06-06 | Matsushita Electric Ind Co Ltd | Electrophoretic display device |
US3826949A (en) * | 1971-07-01 | 1974-07-30 | Sony Corp | Display device and method of making the same |
US3870517A (en) * | 1969-10-18 | 1975-03-11 | Matsushita Electric Ind Co Ltd | Color image reproduction sheet employed in photoelectrophoretic imaging |
US4045327A (en) | 1974-08-28 | 1977-08-30 | Matsushita Electric Industrial Co., Ltd. | Electrophoretic matrix panel |
US4062009A (en) * | 1975-07-17 | 1977-12-06 | Thomson-Csf | Electrophoretic display device |
US4093534A (en) | 1974-02-12 | 1978-06-06 | Plessey Handel Und Investments Ag | Working fluids for electrophoretic image display devices |
US4126854A (en) * | 1976-05-05 | 1978-11-21 | Xerox Corporation | Twisting ball panel display |
US4126528A (en) | 1977-07-26 | 1978-11-21 | Xerox Corporation | Electrophoretic composition and display device |
US4203106A (en) | 1977-11-23 | 1980-05-13 | North American Philips Corporation | X-Y addressable electrophoretic display device with control electrode |
US4272596A (en) | 1979-06-01 | 1981-06-09 | Xerox Corporation | Electrophoretic display device |
US4285801A (en) | 1979-09-20 | 1981-08-25 | Xerox Corporation | Electrophoretic display composition |
US4298448A (en) * | 1979-02-02 | 1981-11-03 | Bbc Brown, Boveri & Company, Limited | Electrophoretic display |
US4311361A (en) | 1980-03-13 | 1982-01-19 | Burroughs Corporation | Electrophoretic display using a non-Newtonian fluid as a threshold device |
US4438160A (en) | 1982-01-18 | 1984-03-20 | Sony Corporation | Method of making a rotary ball display device |
US4440638A (en) * | 1982-02-16 | 1984-04-03 | U.T. Board Of Regents | Surface field-effect device for manipulation of charged species |
US4522472A (en) | 1982-02-19 | 1985-06-11 | North American Philips Corporation | Electrophoretic image display with reduced drives and leads |
US4640583A (en) | 1983-07-22 | 1987-02-03 | Kabushiki Kaisha Seiko Epson | Display panel having an inner and an outer seal and process for the production thereof |
US4704002A (en) | 1982-06-15 | 1987-11-03 | Matsushita Electric Industrial Co., Ltd. | Dot matrix display panel with a thin film transistor and method of manufacturing same |
US4741604A (en) | 1985-02-01 | 1988-05-03 | Kornfeld Cary D | Electrode arrays for cellular displays |
US4804601A (en) | 1987-06-29 | 1989-02-14 | Xerox Corporation | Electrophotographic and electrographic imaging processes |
US5344594A (en) * | 1991-10-29 | 1994-09-06 | Xerox Corporation | Method for the fabrication of multicolored balls for a twisting ball display |
US5699097A (en) * | 1994-04-22 | 1997-12-16 | Kabushiki Kaisha Toshiba | Display medium and method for display therewith |
US5745094A (en) | 1994-12-28 | 1998-04-28 | International Business Machines Corporation | Electrophoretic display |
US5760761A (en) | 1995-12-15 | 1998-06-02 | Xerox Corporation | Highlight color twisting ball display |
US5764401A (en) | 1994-11-11 | 1998-06-09 | Sony Corporation | Optical apparatus |
US5808783A (en) | 1996-06-27 | 1998-09-15 | Xerox Corporation | High reflectance gyricon display |
US5837414A (en) * | 1996-05-29 | 1998-11-17 | Konica Corporation | Toner for developing electrostatic image and method for forming multicolor image |
US5914806A (en) | 1998-02-11 | 1999-06-22 | International Business Machines Corporation | Stable electrophoretic particles for displays |
US5961804A (en) | 1997-03-18 | 1999-10-05 | Massachusetts Institute Of Technology | Microencapsulated electrophoretic display |
US5986629A (en) * | 1996-10-02 | 1999-11-16 | Xerox Corporation | Electrostatic discharge indicator |
US6017584A (en) | 1995-07-20 | 2000-01-25 | E Ink Corporation | Multi-color electrophoretic displays and materials for making the same |
US6025896A (en) * | 1997-10-09 | 2000-02-15 | Brother Kogyo Kabushiki Kaisha | Display device |
US6038059A (en) * | 1998-10-16 | 2000-03-14 | Xerox Corporation | Additive color electric paper without registration or alignment of individual elements |
US6052287A (en) * | 1997-12-09 | 2000-04-18 | Sandia Corporation | Silicon ball grid array chip carrier |
US6067185A (en) | 1997-08-28 | 2000-05-23 | E Ink Corporation | Process for creating an encapsulated electrophoretic display |
US6113810A (en) | 1993-05-21 | 2000-09-05 | Copytele, Inc. | Methods of preparing electrophoretic dispersions containing two types of particles with different colors and opposite charges |
US6120839A (en) | 1995-07-20 | 2000-09-19 | E Ink Corporation | Electro-osmotic displays and materials for making the same |
US6130774A (en) | 1998-04-27 | 2000-10-10 | E Ink Corporation | Shutter mode microencapsulated electrophoretic display |
US6144361A (en) | 1998-09-16 | 2000-11-07 | International Business Machines Corporation | Transmissive electrophoretic display with vertical electrodes |
US6177921B1 (en) | 1997-08-28 | 2001-01-23 | E Ink Corporation | Printable electrode structures for displays |
US6184856B1 (en) * | 1998-09-16 | 2001-02-06 | International Business Machines Corporation | Transmissive electrophoretic display with laterally adjacent color cells |
US6221267B1 (en) | 1997-09-11 | 2001-04-24 | Canon Kabushiki Kaisha | Methods for making spinnable ball, display medium and display device |
US6222513B1 (en) * | 1998-03-10 | 2001-04-24 | Xerox Corporation | Charge retention islands for electric paper and applications thereof |
US6225971B1 (en) | 1998-09-16 | 2001-05-01 | International Business Machines Corporation | Reflective electrophoretic display with laterally adjacent color cells using an absorbing panel |
US6232950B1 (en) | 1997-08-28 | 2001-05-15 | E Ink Corporation | Rear electrode structures for displays |
US6239896B1 (en) | 1998-06-01 | 2001-05-29 | Canon Kabushiki Kaisha | Electrophotographic display device and driving method therefor |
US6249271B1 (en) | 1995-07-20 | 2001-06-19 | E Ink Corporation | Retroreflective electrophoretic displays and materials for making the same |
US6262833B1 (en) | 1998-10-07 | 2001-07-17 | E Ink Corporation | Capsules for electrophoretic displays and methods for making the same |
US6262706B1 (en) | 1995-07-20 | 2001-07-17 | E Ink Corporation | Retroreflective electrophoretic displays and materials for making the same |
US6271823B1 (en) | 1998-09-16 | 2001-08-07 | International Business Machines Corporation | Reflective electrophoretic display with laterally adjacent color cells using a reflective panel |
US6300932B1 (en) | 1997-08-28 | 2001-10-09 | E Ink Corporation | Electrophoretic displays with luminescent particles and materials for making the same |
US6312304B1 (en) | 1998-12-15 | 2001-11-06 | E Ink Corporation | Assembly of microencapsulated electronic displays |
US6323989B1 (en) | 1996-07-19 | 2001-11-27 | E Ink Corporation | Electrophoretic displays using nanoparticles |
US6327072B1 (en) | 1999-04-06 | 2001-12-04 | E Ink Corporation | Microcell electrophoretic displays |
US6330054B1 (en) | 1998-09-30 | 2001-12-11 | Brother Kogyo Kabushiki Kaisha | Image-forming method and image-forming apparatus on recording medium including microcapsules |
US6340965B1 (en) | 1999-03-18 | 2002-01-22 | Xerox Corporation | Modifiable display having fixed image patterns |
US6373461B1 (en) | 1999-01-29 | 2002-04-16 | Seiko Epson Corporation | Piezoelectric transducer and electrophoretic ink display apparatus using piezoelectric transducer |
US6376828B1 (en) | 1998-10-07 | 2002-04-23 | E Ink Corporation | Illumination system for nonemissive electronic displays |
US6392786B1 (en) * | 1999-07-01 | 2002-05-21 | E Ink Corporation | Electrophoretic medium provided with spacers |
US6396205B1 (en) | 1998-12-18 | 2002-05-28 | Xerox Corporation | Nonspecular visual display and method |
US6422687B1 (en) | 1996-07-19 | 2002-07-23 | E Ink Corporation | Electronically addressable microencapsulated ink and display thereof |
US6441881B1 (en) * | 2000-09-14 | 2002-08-27 | Kabushiki Kaisha Toshiba | Electrophoretic liquid crystal reflective display with slanted partition walls |
US6445489B1 (en) | 1998-03-18 | 2002-09-03 | E Ink Corporation | Electrophoretic displays and systems for addressing such displays |
US6456272B1 (en) | 1999-11-12 | 2002-09-24 | Xerox Corporation | Field addressed displays using charge discharging in conjunction with charge retaining island structures |
US6459418B1 (en) | 1995-07-20 | 2002-10-01 | E Ink Corporation | Displays combining active and non-active inks |
US6473072B1 (en) | 1998-05-12 | 2002-10-29 | E Ink Corporation | Microencapsulated electrophoretic electrostatically-addressed media for drawing device applications |
US6486861B1 (en) | 1999-05-07 | 2002-11-26 | Xerox Corporation | Method and apparatus for a display producing a fixed set of images |
US6486901B1 (en) * | 1997-08-29 | 2002-11-26 | Eastman Kodak Company | Microfluidic printing with gel-forming inks |
US6486866B1 (en) * | 1998-11-04 | 2002-11-26 | Sony Corporation | Display device and method of driving the same |
US6487002B1 (en) | 2001-06-11 | 2002-11-26 | Xerox Corporation | Large area micro-structure template for creation of closely packed arrays |
US6498114B1 (en) | 1999-04-09 | 2002-12-24 | E Ink Corporation | Method for forming a patterned semiconductor film |
US6504524B1 (en) | 2000-03-08 | 2003-01-07 | E Ink Corporation | Addressing methods for displays having zero time-average field |
US20030013238A1 (en) | 2000-10-11 | 2003-01-16 | Canon Kabushiki Kaisha | Display device and manufacturing method therefor |
US20030016429A1 (en) | 2001-06-26 | 2003-01-23 | Canon Kabushiki Kaisha | Electrophoretic display device |
US6512354B2 (en) | 1998-07-08 | 2003-01-28 | E Ink Corporation | Method and apparatus for sensing the state of an electrophoretic display |
US6512626B1 (en) * | 1999-06-16 | 2003-01-28 | Creavis Gesellschaft Fuer Technologie Und Innovation Mbh | Composite sheets with electrically switchable optical properties made of light-scattering base material |
US6515649B1 (en) | 1995-07-20 | 2003-02-04 | E Ink Corporation | Suspended particle displays and materials for making the same |
US6518949B2 (en) | 1998-04-10 | 2003-02-11 | E Ink Corporation | Electronic displays using organic-based field effect transistors |
US6517618B2 (en) | 2001-05-24 | 2003-02-11 | Xerox Corporation | Photochromic electrophoretic ink display |
US6525865B2 (en) | 2000-05-30 | 2003-02-25 | Seiko Epson Corporation | Electrophoretic display and method for producing same |
US6524153B1 (en) | 1999-05-14 | 2003-02-25 | Canon Kabushiki Kaisha | Process for producing display device |
US6525866B1 (en) | 2002-01-16 | 2003-02-25 | Xerox Corporation | Electrophoretic displays, display fluids for use therein, and methods of displaying images |
US6529313B1 (en) | 2002-01-16 | 2003-03-04 | Xerox Corporation | Electrophoretic displays, display fluids for use therein, and methods of displaying images |
US6531997B1 (en) | 1999-04-30 | 2003-03-11 | E Ink Corporation | Methods for addressing electrophoretic displays |
US20030048521A1 (en) | 2001-09-12 | 2003-03-13 | Canon Kabushiki Kaisha | Electrophoretic display device |
US6535326B2 (en) | 2000-11-17 | 2003-03-18 | Canon Kabushiki Kaisha | Electrophoretic display device |
US6538801B2 (en) | 1996-07-19 | 2003-03-25 | E Ink Corporation | Electrophoretic displays using nanoparticles |
US6545797B2 (en) | 2001-06-11 | 2003-04-08 | Sipix Imaging, Inc. | Process for imagewise opening and filling color display components and color displays manufactured thereof |
US6545291B1 (en) | 1999-08-31 | 2003-04-08 | E Ink Corporation | Transistor design for use in the construction of an electronically driven display |
US6599097B2 (en) * | 2001-08-14 | 2003-07-29 | Woosung Vacuum Co., Ltd. | Dry vacuum pump with improved gas discharging speed and pump cooling |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4209481A (en) * | 1976-04-19 | 1980-06-24 | Toray Industries, Inc. | Process for producing an anisotropically electroconductive sheet |
US4725494A (en) * | 1982-09-02 | 1988-02-16 | Minnesota Mining And Manufacturing Co. | Retroreflective sheeting |
US4678695A (en) * | 1985-12-23 | 1987-07-07 | Minnesota Mining And Manufacturing Company | Encapsulated flattop retroreflective sheeting and method for producing the same |
KR930005559B1 (en) * | 1991-06-14 | 1993-06-23 | 삼성전관 주식회사 | Plane display devices |
US5380362A (en) * | 1993-07-16 | 1995-01-10 | Copytele, Inc. | Suspension for use in electrophoretic image display systems |
US6428868B1 (en) * | 1996-06-27 | 2002-08-06 | Xerox Corporation | Twisting-cylinder display |
US5922268A (en) * | 1997-10-30 | 1999-07-13 | Xerox Corporation | Method of manufacturing a twisting cylinder display using multiple chromatic values |
-
2000
- 2000-09-22 US US09/667,807 patent/US6879314B1/en not_active Expired - Fee Related
-
2002
- 2002-08-12 US US10/216,445 patent/US7170470B2/en not_active Expired - Fee Related
-
2004
- 2004-12-14 US US11/010,395 patent/US7427978B2/en not_active Expired - Fee Related
Patent Citations (96)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3612758A (en) | 1969-10-03 | 1971-10-12 | Xerox Corp | Color display device |
US3870517A (en) * | 1969-10-18 | 1975-03-11 | Matsushita Electric Ind Co Ltd | Color image reproduction sheet employed in photoelectrophoretic imaging |
US3668106A (en) * | 1970-04-09 | 1972-06-06 | Matsushita Electric Ind Co Ltd | Electrophoretic display device |
US3826949A (en) * | 1971-07-01 | 1974-07-30 | Sony Corp | Display device and method of making the same |
US4093534A (en) | 1974-02-12 | 1978-06-06 | Plessey Handel Und Investments Ag | Working fluids for electrophoretic image display devices |
US4045327A (en) | 1974-08-28 | 1977-08-30 | Matsushita Electric Industrial Co., Ltd. | Electrophoretic matrix panel |
US4062009A (en) * | 1975-07-17 | 1977-12-06 | Thomson-Csf | Electrophoretic display device |
US4126854A (en) * | 1976-05-05 | 1978-11-21 | Xerox Corporation | Twisting ball panel display |
US4126528A (en) | 1977-07-26 | 1978-11-21 | Xerox Corporation | Electrophoretic composition and display device |
US4203106A (en) | 1977-11-23 | 1980-05-13 | North American Philips Corporation | X-Y addressable electrophoretic display device with control electrode |
US4298448A (en) * | 1979-02-02 | 1981-11-03 | Bbc Brown, Boveri & Company, Limited | Electrophoretic display |
US4272596A (en) | 1979-06-01 | 1981-06-09 | Xerox Corporation | Electrophoretic display device |
US4285801A (en) | 1979-09-20 | 1981-08-25 | Xerox Corporation | Electrophoretic display composition |
US4311361A (en) | 1980-03-13 | 1982-01-19 | Burroughs Corporation | Electrophoretic display using a non-Newtonian fluid as a threshold device |
US4438160A (en) | 1982-01-18 | 1984-03-20 | Sony Corporation | Method of making a rotary ball display device |
US4440638A (en) * | 1982-02-16 | 1984-04-03 | U.T. Board Of Regents | Surface field-effect device for manipulation of charged species |
US4522472A (en) | 1982-02-19 | 1985-06-11 | North American Philips Corporation | Electrophoretic image display with reduced drives and leads |
US4704002A (en) | 1982-06-15 | 1987-11-03 | Matsushita Electric Industrial Co., Ltd. | Dot matrix display panel with a thin film transistor and method of manufacturing same |
US4640583A (en) | 1983-07-22 | 1987-02-03 | Kabushiki Kaisha Seiko Epson | Display panel having an inner and an outer seal and process for the production thereof |
US4741604A (en) | 1985-02-01 | 1988-05-03 | Kornfeld Cary D | Electrode arrays for cellular displays |
US4804601A (en) | 1987-06-29 | 1989-02-14 | Xerox Corporation | Electrophotographic and electrographic imaging processes |
US5344594A (en) * | 1991-10-29 | 1994-09-06 | Xerox Corporation | Method for the fabrication of multicolored balls for a twisting ball display |
US6113810A (en) | 1993-05-21 | 2000-09-05 | Copytele, Inc. | Methods of preparing electrophoretic dispersions containing two types of particles with different colors and opposite charges |
US5699097A (en) * | 1994-04-22 | 1997-12-16 | Kabushiki Kaisha Toshiba | Display medium and method for display therewith |
US5764401A (en) | 1994-11-11 | 1998-06-09 | Sony Corporation | Optical apparatus |
US5745094A (en) | 1994-12-28 | 1998-04-28 | International Business Machines Corporation | Electrophoretic display |
US5872552A (en) | 1994-12-28 | 1999-02-16 | International Business Machines Corporation | Electrophoretic display |
US6515649B1 (en) | 1995-07-20 | 2003-02-04 | E Ink Corporation | Suspended particle displays and materials for making the same |
US6459418B1 (en) | 1995-07-20 | 2002-10-01 | E Ink Corporation | Displays combining active and non-active inks |
US6249271B1 (en) | 1995-07-20 | 2001-06-19 | E Ink Corporation | Retroreflective electrophoretic displays and materials for making the same |
US6262706B1 (en) | 1995-07-20 | 2001-07-17 | E Ink Corporation | Retroreflective electrophoretic displays and materials for making the same |
US6120839A (en) | 1995-07-20 | 2000-09-19 | E Ink Corporation | Electro-osmotic displays and materials for making the same |
US6017584A (en) | 1995-07-20 | 2000-01-25 | E Ink Corporation | Multi-color electrophoretic displays and materials for making the same |
US5760761A (en) | 1995-12-15 | 1998-06-02 | Xerox Corporation | Highlight color twisting ball display |
US5837414A (en) * | 1996-05-29 | 1998-11-17 | Konica Corporation | Toner for developing electrostatic image and method for forming multicolor image |
US5808783A (en) | 1996-06-27 | 1998-09-15 | Xerox Corporation | High reflectance gyricon display |
US6323989B1 (en) | 1996-07-19 | 2001-11-27 | E Ink Corporation | Electrophoretic displays using nanoparticles |
US6422687B1 (en) | 1996-07-19 | 2002-07-23 | E Ink Corporation | Electronically addressable microencapsulated ink and display thereof |
US6538801B2 (en) | 1996-07-19 | 2003-03-25 | E Ink Corporation | Electrophoretic displays using nanoparticles |
US5986629A (en) * | 1996-10-02 | 1999-11-16 | Xerox Corporation | Electrostatic discharge indicator |
US5961804A (en) | 1997-03-18 | 1999-10-05 | Massachusetts Institute Of Technology | Microencapsulated electrophoretic display |
US6232950B1 (en) | 1997-08-28 | 2001-05-15 | E Ink Corporation | Rear electrode structures for displays |
US6392785B1 (en) | 1997-08-28 | 2002-05-21 | E Ink Corporation | Non-spherical cavity electrophoretic displays and materials for making the same |
US6535197B1 (en) | 1997-08-28 | 2003-03-18 | E Ink Corporation | Printable electrode structures for displays |
US6445374B2 (en) | 1997-08-28 | 2002-09-03 | E Ink Corporation | Rear electrode structures for displays |
US6067185A (en) | 1997-08-28 | 2000-05-23 | E Ink Corporation | Process for creating an encapsulated electrophoretic display |
US6177921B1 (en) | 1997-08-28 | 2001-01-23 | E Ink Corporation | Printable electrode structures for displays |
US6300932B1 (en) | 1997-08-28 | 2001-10-09 | E Ink Corporation | Electrophoretic displays with luminescent particles and materials for making the same |
US6486901B1 (en) * | 1997-08-29 | 2002-11-26 | Eastman Kodak Company | Microfluidic printing with gel-forming inks |
US6221267B1 (en) | 1997-09-11 | 2001-04-24 | Canon Kabushiki Kaisha | Methods for making spinnable ball, display medium and display device |
US6025896A (en) * | 1997-10-09 | 2000-02-15 | Brother Kogyo Kabushiki Kaisha | Display device |
US6052287A (en) * | 1997-12-09 | 2000-04-18 | Sandia Corporation | Silicon ball grid array chip carrier |
US5914806A (en) | 1998-02-11 | 1999-06-22 | International Business Machines Corporation | Stable electrophoretic particles for displays |
US6222513B1 (en) * | 1998-03-10 | 2001-04-24 | Xerox Corporation | Charge retention islands for electric paper and applications thereof |
US6445489B1 (en) | 1998-03-18 | 2002-09-03 | E Ink Corporation | Electrophoretic displays and systems for addressing such displays |
US6518949B2 (en) | 1998-04-10 | 2003-02-11 | E Ink Corporation | Electronic displays using organic-based field effect transistors |
US6130774A (en) | 1998-04-27 | 2000-10-10 | E Ink Corporation | Shutter mode microencapsulated electrophoretic display |
US6172798B1 (en) | 1998-04-27 | 2001-01-09 | E Ink Corporation | Shutter mode microencapsulated electrophoretic display |
US6473072B1 (en) | 1998-05-12 | 2002-10-29 | E Ink Corporation | Microencapsulated electrophoretic electrostatically-addressed media for drawing device applications |
US6239896B1 (en) | 1998-06-01 | 2001-05-29 | Canon Kabushiki Kaisha | Electrophotographic display device and driving method therefor |
US6512354B2 (en) | 1998-07-08 | 2003-01-28 | E Ink Corporation | Method and apparatus for sensing the state of an electrophoretic display |
US6271823B1 (en) | 1998-09-16 | 2001-08-07 | International Business Machines Corporation | Reflective electrophoretic display with laterally adjacent color cells using a reflective panel |
US6144361A (en) | 1998-09-16 | 2000-11-07 | International Business Machines Corporation | Transmissive electrophoretic display with vertical electrodes |
US6225971B1 (en) | 1998-09-16 | 2001-05-01 | International Business Machines Corporation | Reflective electrophoretic display with laterally adjacent color cells using an absorbing panel |
US6184856B1 (en) * | 1998-09-16 | 2001-02-06 | International Business Machines Corporation | Transmissive electrophoretic display with laterally adjacent color cells |
US6330054B1 (en) | 1998-09-30 | 2001-12-11 | Brother Kogyo Kabushiki Kaisha | Image-forming method and image-forming apparatus on recording medium including microcapsules |
US6376828B1 (en) | 1998-10-07 | 2002-04-23 | E Ink Corporation | Illumination system for nonemissive electronic displays |
US6262833B1 (en) | 1998-10-07 | 2001-07-17 | E Ink Corporation | Capsules for electrophoretic displays and methods for making the same |
US6038059A (en) * | 1998-10-16 | 2000-03-14 | Xerox Corporation | Additive color electric paper without registration or alignment of individual elements |
US6486866B1 (en) * | 1998-11-04 | 2002-11-26 | Sony Corporation | Display device and method of driving the same |
US6312304B1 (en) | 1998-12-15 | 2001-11-06 | E Ink Corporation | Assembly of microencapsulated electronic displays |
US6396205B1 (en) | 1998-12-18 | 2002-05-28 | Xerox Corporation | Nonspecular visual display and method |
US6373461B1 (en) | 1999-01-29 | 2002-04-16 | Seiko Epson Corporation | Piezoelectric transducer and electrophoretic ink display apparatus using piezoelectric transducer |
US6340965B1 (en) | 1999-03-18 | 2002-01-22 | Xerox Corporation | Modifiable display having fixed image patterns |
US6327072B1 (en) | 1999-04-06 | 2001-12-04 | E Ink Corporation | Microcell electrophoretic displays |
US6498114B1 (en) | 1999-04-09 | 2002-12-24 | E Ink Corporation | Method for forming a patterned semiconductor film |
US6531997B1 (en) | 1999-04-30 | 2003-03-11 | E Ink Corporation | Methods for addressing electrophoretic displays |
US6486861B1 (en) | 1999-05-07 | 2002-11-26 | Xerox Corporation | Method and apparatus for a display producing a fixed set of images |
US6524153B1 (en) | 1999-05-14 | 2003-02-25 | Canon Kabushiki Kaisha | Process for producing display device |
US6512626B1 (en) * | 1999-06-16 | 2003-01-28 | Creavis Gesellschaft Fuer Technologie Und Innovation Mbh | Composite sheets with electrically switchable optical properties made of light-scattering base material |
US6392786B1 (en) * | 1999-07-01 | 2002-05-21 | E Ink Corporation | Electrophoretic medium provided with spacers |
US6545291B1 (en) | 1999-08-31 | 2003-04-08 | E Ink Corporation | Transistor design for use in the construction of an electronically driven display |
US6456272B1 (en) | 1999-11-12 | 2002-09-24 | Xerox Corporation | Field addressed displays using charge discharging in conjunction with charge retaining island structures |
US6504524B1 (en) | 2000-03-08 | 2003-01-07 | E Ink Corporation | Addressing methods for displays having zero time-average field |
US6525865B2 (en) | 2000-05-30 | 2003-02-25 | Seiko Epson Corporation | Electrophoretic display and method for producing same |
US6441881B1 (en) * | 2000-09-14 | 2002-08-27 | Kabushiki Kaisha Toshiba | Electrophoretic liquid crystal reflective display with slanted partition walls |
US20030013238A1 (en) | 2000-10-11 | 2003-01-16 | Canon Kabushiki Kaisha | Display device and manufacturing method therefor |
US6535326B2 (en) | 2000-11-17 | 2003-03-18 | Canon Kabushiki Kaisha | Electrophoretic display device |
US6517618B2 (en) | 2001-05-24 | 2003-02-11 | Xerox Corporation | Photochromic electrophoretic ink display |
US6545797B2 (en) | 2001-06-11 | 2003-04-08 | Sipix Imaging, Inc. | Process for imagewise opening and filling color display components and color displays manufactured thereof |
US6487002B1 (en) | 2001-06-11 | 2002-11-26 | Xerox Corporation | Large area micro-structure template for creation of closely packed arrays |
US20030016429A1 (en) | 2001-06-26 | 2003-01-23 | Canon Kabushiki Kaisha | Electrophoretic display device |
US6599097B2 (en) * | 2001-08-14 | 2003-07-29 | Woosung Vacuum Co., Ltd. | Dry vacuum pump with improved gas discharging speed and pump cooling |
US20030048521A1 (en) | 2001-09-12 | 2003-03-13 | Canon Kabushiki Kaisha | Electrophoretic display device |
US6529313B1 (en) | 2002-01-16 | 2003-03-04 | Xerox Corporation | Electrophoretic displays, display fluids for use therein, and methods of displaying images |
US6525866B1 (en) | 2002-01-16 | 2003-02-25 | Xerox Corporation | Electrophoretic displays, display fluids for use therein, and methods of displaying images |
Non-Patent Citations (1)
Title |
---|
Tipler, P. A., Physics, Second Edition, Worth Publishers, Inc., New York, NY, 1982. |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100156768A1 (en) * | 2008-12-22 | 2010-06-24 | Fletcher Ii James Douglas | Display media, method of forming display media, and printer for printing on display media |
Also Published As
Publication number | Publication date |
---|---|
US20020190936A1 (en) | 2002-12-19 |
US7427978B2 (en) | 2008-09-23 |
US20050200592A1 (en) | 2005-09-15 |
US7170470B2 (en) | 2007-01-30 |
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